<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <h2><%=book._id?'更新':'添加'%>图书</h2>
    <form action="/book/<%=book._id?'update':'add'%>" method = "post">
    <%
    if(book._id){
        %>
      <input type="hidden" name="_id" value="<%=book._id%>">
    <%
    }
    %>
    书名: <input type="text" name="name" value="<%=book.name%>"><br/>
    作者: <input type="text" name="author" value="<%=book.author%>"><br/>
    价格: <input type="number" name="price" value="<%=book.price%>"><br/>
    <input type="submit" value="提交">
  </form>
</body>
</html>